Abstract
Taking logistics time, logistics cost, and carbon emissions as optimization objectives, air transportation is included in the cross-border logistics paths optimization of multimodal transportation. Considering the scale effect of transportation, a multiobjective optimization model of cross-border logistics paths including road, water, railway, and air is constructed. The problem of cross-border logistics paths along the “Belt and Road” regions for cities in inland is studied via the NSGA-II method. The research results show that Chengdu and Xi’an should bear a large number of cross-border air transportation and be constructed as the national airport-type logistics hub. The foreign destinations of cross-border air transportation are distributed in different regions, mainly in Eastern Europe and Eastern Central Europe. The optimization result shows that if there is a 1-fold increase in logistics cost, the logistics time can reduce by 1.37 folds after the cross-border air transportation joins in the model. Such a result has effectively guided the transition from cross-border water transportation to cross-border air transportation.
Highlights
Journal of Advanced Transportation scholars consider transportation cost and consider transit costs, storage costs, and transportation scale effects when constructing an optimization model [6,7,8]
Considering the optimization of the “Belt and Road” crossborder logistics paths in inland regions, this study focuses on the key regions including the urban agglomeration in the middle reaches of the Yangtze River, Chengdu–Chongqing urban agglomeration, and Zhongyuan Urban agglomeration
The solution indicated by the arrow is the Pareto satisfactory solution. e characteristic of this solution increasing the least logistics costs can save the most logistics time. e logistics path corresponding to this Pareto satisfactory solution is BaojiChangsha-Guangzhou-Mumbai-New Delhi. e logistics cost of this path is 232,304.24 yuan and the logistics time of this path is 18.09 days
Summary
(3) e cargoes are transported first from the domestic source of supply i to domestic dry port d through road transportation, to foreign dry port through cross-border rail transportation, and to the foreign destination j through road transportation. Vrd e road transportation speed different cross-border logistics paths in each mode. E first part of the objective function is the transportation time of the road-sea multimodal transportation and the storage time of domestic and foreign seaports. E second part is the transportation time of the road-rail-sea multimodal transportation and the storage time of domestic, foreign seaports, and domestic dry ports. E third part is the transportation time of the road-rail multimodal transportation and the storage time of domestic and foreign dry ports. Constraint condition (9) indicates that the variables in the constraint are binary variables
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